Or download our app "Guided Lessons by Education.com" on your device's app store.
Tin Can Phone
Even in the era of the cordless and the mobile, there’s a lot to be said for the old-fashioned tin-can phone. There’s nothing flashy about this model, and you can’t send email through the wire – er, string. But it offers something more modern versions don’t – a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.